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Determine the number of logs in the pile if there are logs stacked in a pile in which there are 21 logs in the bottom row and 15 logs in the top row if there are seven rows?
Wiki User
∙ 14y ago
Firstly, the 1st row has 21 logs, the last has 15. The difference is 6, though the number of terms is 7. (21 - 14 = 7), and 7/7 (per row) is 1. Thus, it decreases by 1 every row. So we have an addition problem:
21 + 20 + 19 + 18 + 17 + 16 + 15 = 3(36) + 18 = 108 + 18 = 126.
Wiki User
∙ 14y ago
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How do you write four hundred eighty-seven thousandths as a decimal?
Write the fraction and then divide the numerator (top number) by the denominator (bottom number): four hundred and eighty seven thousandths = 487/1000 = 0.487
What are to equivalent fractions form seven eights and two thirds?
Multiply top and bottom of any of the fractions by the same number - it can be any number except zero. That will give you an equivalent fraction.
Twenty seven cubes are placed together to make a large cube that is painted on the outside how many small cubes will have 2 and only 2 faces painted?
If the blocks are to be painted THEN stacked, the answer is 12 - the center blocks of each vertical edge (4) and horizontal edge (8). -OR- If the cubes are to be stacked BEFORE painting then the answer is also 12 - the center blocks of the 4 vertical edges, the center blocks of the top 4 horizontal edges, and the 4 bottom corner blocks.
What is the value of the seven in the number?
Seven as a number is 7 and it is a prime number.
How you spell the number 7?
The number 7 is spelled as "seven."
1997 mountaineer what number is the power window relay-fuse?
The 1997 Mercury Mountaineer power window fuse will be the number seven fuse. The number seven fuse will be in the first column, third from the bottom.
How do you write four hundred eighty-seven thousandths as a decimal?
Write the fraction and then divide the numerator (top number) by the denominator (bottom number): four hundred and eighty seven thousandths = 487/1000 = 0.487
The denominator of 7 8 is?
The denominator is the bottom number of a fraction. Therefore, the denominator of 7/8 (seven eighths) is eight.
What is the decimal form of seven eights?
you have to divide the numerator (top number; in this case 7) by the denominator (bottom number; in this case 8) 7/8=0.875
What is an equvalent fraction to 21 over 35?
divide both top and bottom by the same number (I chose you Seven!) 3/5
How do you change a proper fraction into a mixed number?
you take the bottom number times it by how many whole pieces there are then add the top. like this: 3 1- 4 four times one is four plus three is seven so you have seven fourths
What is number seven?
The number seven is 7 which is a Prime number.
What fractions is equivalent to seven eights?
Multiply the numerator (top) by any non-zero number and the denominator (bottom) by the same number. You will have an equivalent fraction.
What are to equivalent fractions form seven eights and two thirds?
Multiply top and bottom of any of the fractions by the same number - it can be any number except zero. That will give you an equivalent fraction.
What is the equivalent fraction for seven twelfths?
multiply the numerator (top number) and the denominator (the bottom number) by the same number ex: equivalent fractions for 7 x 2 = 14 12 x 2 =24
What are three fractions equivalent to seven fourteenths?
Multiply the numerator (top) and the denominator (bottom) of the fraction by any non-zero number. You will have an equivalent fraction.
Twenty seven cubes are placed together to make a large cube that is painted on the outside how many small cubes will have 2 and only 2 faces painted?
If the blocks are to be painted THEN stacked, the answer is 12 - the center blocks of each vertical edge (4) and horizontal edge (8). -OR- If the cubes are to be stacked BEFORE painting then the answer is also 12 - the center blocks of the 4 vertical edges, the center blocks of the top 4 horizontal edges, and the 4 bottom corner blocks.
